Cruise Control - Inoperative

Cruise Control Inoperative

Diagnostic Aids

Important: Perform the following in order to avoid misdiagnosis.

- Inspect for proper operation of brake lamps.

- Inspect the throttle linkage for mechanical binding which could cause the system to malfunction.

- Inspect the cruise control cable adjustment, should have minimum slack.

- Inspect for the stored Diagnostic Trouble Codes (DTCs) in the PCM. Refer to Powertrain OBD System check in Engine Controls.

- EMI on the speed sensor signal circuit may cause erratic cruise control operation.

Conditions for Enabling Cruise Control

- When vehicle speed is more than 40 km/h (25 mph)

- When PARK, REVERSE, NEUTRAL, or 1st gear is not indicated by the Park Neutral Position Switch.

- When an over/undercharged battery condition does not exist.

- With normal engine RPM.

- Without high engine RPM (fuel cut-off). Refer to Powertrain Control Module Description in Engine Controls for additional information.

Test Description

Steps 1 And 2 (Part A):

Steps 2 (Part B) And Steps 3 through 8 (Part A):

Step 8 (Part B) And 9 Through 15:

Step 16 Through 23:

Step 24 Through 31:

Step 32 Through 38 (Part A):

Step 38 (Part B) Through 45 (Part A):

Step 45 (Part B) Through 46: